The Inbox Repair tool scans the .ost or .pst file and makes sure that the file structure is intact. The tool also tries to repair the internal data structures, if it is necessary. The tool does not interact with your mailbox on the Exchange Server. If users are facing syncing issues in Outlook due to corrupt Outlook data files, they must choose a professional tool, like Shoviv OST to PST Converter Tool.

Methods to fix Microsoft Outlook syncing error

It scans your local copy of the .ost file and your mailbox on an Exchange Server. The tool compares items and folders in the file and in your mailbox and tries to reconcile synchronization differences between the files and the mailbox. The OST Integrity Check Tool does not change your mailbox on the Exchange Server.

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• The tool also tries to repair the internal data structures, if it is necessary.
• Start with basic network checks, enable Cached Exchange Mode, and repair your data files if needed.
• Outlook sync issues can be because of corrupted Outlook OST or PST files.
• After these instructions, ensure the sync settings are correct and check everything is working well.
• The Inbox Repair tool scans the .ost or .pst file and makes sure that the file structure is intact.
• If you are still facing this issue, kindly follow the solutions below to fix the sync issues in Outlook.
• Users can also try its free demo version in their system and process the first 50 items from each folder freely.

Users can also try its free demo version in their system and process the first 50 items from each folder freely. Outlook and Office 365 sync issues can be frustrating but are almost always fixable. Start with basic network checks, enable Cached Exchange Mode, and repair your data files if needed. For persistent problems, rebuild your Outlook profile or use FixTechGuide’s free diagnostic tools to automate detection of authentication and IMAP errors in seconds. The OST Integrity Check Tool runs only on .ost files and can be used to diagnose and repair synchronization issues.

Step 4: Repair the Outlook OST File

If you have a slow internet connection or large mailboxes, default timeouts may be too short. Faulty add-ins (especially antivirus or CRM extensions) can freeze Outlook during synchronization. For a similar error caused by solve Office 365 mailbox sync delays a different issue, refer to Outlook shows Disconnected in status bar if the last character in legacyExchangeDN is a space. This mode is ideal for slow connections or intermittent server responses. If Outlook syncs fine now, re-enable add-ins one by one to find the culprit.

Step 10 – Rebuild Offline Cache (OST)

If this method doesn’t work for you, navigate to other solutions. FixTechGuide fix for stuck folders Before you dive into folder sync issues, read our complete Outlook and Office 365 Sync Guide for an overview of how synchronization works. By limiting synchronization to active folders, Outlook finishes updates faster and avoids timeouts. Use the OST Integrity Check Tool (Scanost.exe) to check your .ost file for inconsistencies. When these symptoms occur, or you have other problems synchronizing, the problem might be a corrupted .ost file. Users can also convert OST files into various file formats, including PST, HTML, EML, MSG, vCard, etc.

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When synchronization issues occur in Microsoft Outlook or in Microsoft Outlook Web App (formerly Outlook Web Access), you may experience the following symptoms. Knowing the reasons behind the Outlook sync issues will help us to fix this problem and prevent Microsoft Outlook Email Repair Tool Online issues in communication and workflow. There can be several reasons for the Outlook synchronization error.